maride/guacamole-spice-protocol
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Switching to cairo, partial translation.

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This commit is contained in:
Michael Jumper 2011-03-27 18:28:10 -07:00
parent 56c3b04e9e
commit e49798364b
2 changed files with 36 additions and 52 deletions
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2
protocols/vnc/configure.in
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@ -44,7 +44,7 @@ AC_PROG_LIBTOOL
# Checks for libraries.
AC_CHECK_LIB([guac], [guac_get_client],, AC_MSG_ERROR("libguac is required for communication via the guacamole protocol"))
AC_CHECK_LIB([png], [png_write_png],, AC_MSG_ERROR("libpng is required for writing png messages"))
AC_CHECK_LIB([cairo], [cairo_create],, AC_MSG_ERROR("cairo is required for drawing instructions"))
AC_CHECK_LIB([vncclient], [rfbInitClient],, AC_MSG_ERROR("libvncclient is required"))
# Checks for header files.

86
protocols/vnc/src/vnc_client.c
View File

@ -38,13 +38,13 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <png.h>
#include <time.h>
#include <guacamole/log.h>
#include <cairo/cairo.h>
#include <rfb/rfbclient.h>
#include <guacamole/log.h>
#include <guacamole/guacio.h>
#include <guacamole/protocol.h>
#include <guacamole/client.h>
@ -66,10 +66,6 @@ typedef struct vnc_guac_client_data {
rfbClient* rfb_client;
MallocFrameBufferProc rfb_MallocFrameBuffer;
png_byte** png_buffer;
png_byte** png_buffer_alpha;
int buffer_height;
int copy_rect_used;
char* password;
char* encodings;
@ -78,61 +74,69 @@ typedef struct vnc_guac_client_data {
void guac_vnc_cursor(rfbClient* client, int x, int y, int w, int h, int bpp) {
int dx, dy;
guac_client* gc = rfbClientGetClientData(client, __GUAC_CLIENT);
GUACIO* io = gc->io;
png_byte** png_buffer = ((vnc_guac_client_data*) gc->data)->png_buffer_alpha;
png_byte* row;
png_byte** png_row_current = png_buffer;
/* Cairo image buffer */
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, w);
unsigned char* buffer = malloc(h*stride);
unsigned char* buffer_row_current = buffer;
cairo_surface_t* surface;
unsigned int bytesPerRow = bpp * w;
/* VNC image buffer */
unsigned int fb_stride = bpp * w;
unsigned char* fb_row_current = client->rcSource;
unsigned char* fb_mask = client->rcMask;
unsigned char* fb_row;
unsigned int v;
/* Copy image data from VNC client to PNG */
int dx, dy;
/* Copy image data from VNC client to RGBA buffer */
for (dy = 0; dy<h; dy++) {
row = *(png_row_current++);
unsigned char* buffer_current = buffer_row_current;
buffer_row_current += stride;
fb_row = fb_row_current;
fb_row_current += bytesPerRow;
unsigned char* fb_current = fb_row_current;
fb_row_current += fb_stride;
for (dx = 0; dx<w; dx++) {
unsigned char alpha;
unsigned int v;
/* Read current pixel value */
switch (bpp) {
case 4:
v = *((unsigned int*) fb_row);
v = *((unsigned int*) fb_current);
break;
case 2:
v = *((unsigned short*) fb_row);
v = *((unsigned short*) fb_current);
break;
default:
v = *((unsigned char*) fb_row);
v = *((unsigned char*) fb_current);
}
*(row++) = (v >> client->format.redShift) * 256 / (client->format.redMax+1);
*(row++) = (v >> client->format.greenShift) * 256 / (client->format.greenMax+1);
*(row++) = (v >> client->format.blueShift) * 256 / (client->format.blueMax+1);
/* Translate mask to alpha */
if (*(fb_mask++)) alpha = 0xFF;
else alpha = 0x00;
/* Handle mask */
if (*(fb_mask++))
*(row++) = 255;
else
*(row++) = 0;
/* Output ARGB */
*(buffer_current++) = alpha;
*(buffer_current++) = (v >> client->format.redShift) * 0x100 / (client->format.redMax + 1);
*(buffer_current++) = (v >> client->format.greenShift) * 0x100 / (client->format.greenMax+ 1);
*(buffer_current++) = (v >> client->format.blueShift) * 0x100 / (client->format.blueMax + 1);
fb_row += bpp;
/* Next VNC pixel */
fb_current += bpp;
}
}
/* SEND CURSOR */
guac_send_cursor(io, x, y, png_buffer, w, h);
surface = cairo_image_surface_create_for_data(buffer, CAIRO_FORMAT_ARGB32, w, h, stride);
guac_send_cursor(io, x, y, surface);
/* libvncclient does not free rcMask as it does rcSource */
free(client->rcMask);
@ -220,17 +224,6 @@ rfbBool guac_vnc_malloc_framebuffer(rfbClient* rfb_client) {
guac_client* gc = rfbClientGetClientData(rfb_client, __GUAC_CLIENT);
vnc_guac_client_data* guac_client_data = (vnc_guac_client_data*) gc->data;
/* Free old buffers */
if (guac_client_data->png_buffer != NULL)
guac_free_png_buffer(guac_client_data->png_buffer, guac_client_data->buffer_height);
if (guac_client_data->png_buffer_alpha != NULL)
guac_free_png_buffer(guac_client_data->png_buffer_alpha, guac_client_data->buffer_height);
/* Allocate new buffers */
guac_client_data->png_buffer = guac_alloc_png_buffer(rfb_client->width, rfb_client->height, 3); /* No-alpha */
guac_client_data->png_buffer_alpha = guac_alloc_png_buffer(rfb_client->width, rfb_client->height, 4); /* With alpha */
guac_client_data->buffer_height = rfb_client->height;
/* Send new size */
guac_send_size(gc->io, rfb_client->width, rfb_client->height);
@ -303,14 +296,7 @@ int vnc_guac_client_clipboard_handler(guac_client* client, char* data) {
int vnc_guac_client_free_handler(guac_client* client) {
vnc_guac_client_data* guac_client_data = (vnc_guac_client_data*) client->data;
rfbClient* rfb_client = guac_client_data->rfb_client;
png_byte** png_buffer = guac_client_data->png_buffer;
png_byte** png_buffer_alpha = guac_client_data->png_buffer_alpha;
/* Free PNG data */
guac_free_png_buffer(png_buffer, guac_client_data->buffer_height);
guac_free_png_buffer(png_buffer_alpha, guac_client_data->buffer_height);
/* Free encodings string, if used */
if (guac_client_data->encodings != NULL)
@ -394,8 +380,6 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
rfb_client->GetPassword = guac_vnc_get_password;
/* Hook into allocation so we can handle resize. */
guac_client_data->png_buffer = NULL;
guac_client_data->png_buffer_alpha = NULL;
guac_client_data->rfb_MallocFrameBuffer = rfb_client->MallocFrameBuffer;
rfb_client->MallocFrameBuffer = guac_vnc_malloc_framebuffer;
rfb_client->canHandleNewFBSize = 1;